/Engine/Source/Editor/ViewportInteraction/Public/VIGizmoHandle.h
Updates the colors of the dynamic material instances for the handle passed using its axis index
void UpdateHandleColor ( const int32 AxisIndex, [FGizmoHandle](API\Editor\ViewportInteraction\FGizmoHandle) & Handle, class [UActorComponent](API\Runtime\Engine\Components\UActorComponent) * DraggingHandle, const [TArray](API\Runtime\Core\Containers\TArray)< [UActorComponent](API\Runtime\Engine\Components\UActorComponent) * > & HoveringOverHandles )